libelwix/src/uuid.c - diff

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Diff for /libelwix/src/uuid.c between versions 1.1 and 1.1.2.1

-version 1.1, 2025/11/17 19:53:08
+version 1.1.2.1, 2025/11/17 19:53:08
- Line 0
+ Line 1
+ /*************************************************************************
+ * (C) 2025 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
+ *  by Michael Pounov <misho@elwix.org>
+ *
+ * $Author$
+ * $Id$
+ *
+ **************************************************************************
+ The ELWIX and AITNET software is distributed under the following
+ terms:
+ All of the documentation and software included in the ELWIX and AITNET
+ Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
+ Copyright 2004 - 2025
+         by Michael Pounov <misho@elwix.org>.  All rights reserved.
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+. All advertising materials mentioning features or use of this software
+    must display the following acknowledgement:
+ This product includes software developed by Michael Pounov <misho@elwix.org>
+ ELWIX - Embedded LightWeight unIX and its contributors.
+. Neither the name of AITNET nor the names of its contributors
+    may be used to endorse or promote products derived from this software
+    without specific prior written permission.
+ THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.
+ */
+ #include "global.h"
+ /*
+  * e_random() - ELWIX Random routine
+  *
+  * return: random number
+  */
+ long
+ e_random()
+ {
+         int fd;
+         long ret = -1L;
+         fd = open("/dev/urandom", O_RDONLY);
+         if (fd == -1) {
+                 srandom(time(NULL) ^ getpid());
+                 return random();
+         }
+         if (read(fd, &ret, sizeof ret) == -1) {
+                 srandom(time(NULL) ^ getpid());
+                 ret = random();
+         }
+         close(fd);
+         return ret;
+ }
+ /*
+  * e_randbuf() - Fill buffer with random numbers
+  *
+  * @rnd = Buffer
+  * @rndlen = Length of buffer
+  *
+  * return: -1 error or 0 ok
+  */
+ int
+ e_randbuf(u_char *rnd, int rndlen)
+ {
+         int fd, ret = 0;
+         if (!rnd || rndlen < 1)
+                 return -1;
+         fd = open("/dev/urandom", O_RDONLY);
+         if (fd == -1) {
+                 elwix_SetErr(errno, "%s", strerror(errno));
+                 return -1;
+         }
+         if (read(fd, rnd, rndlen) == -1) {
+                 elwix_SetErr(errno, "%s", strerror(errno));
+                 ret = -1;
+         }
+         close(fd);
+         return ret;
+ }
+ /*
+  * uuid_gen() - Generate UUID
+  *
+  * @uuid = UUID
+  *
+  * return: -1 error or 0 ok
+  */
+ int
+ uuid_gen(uuid_t uuid)
+ {
+         uuid_t id;
+         if (e_randbuf(id, sizeof id) == -1)
+                 return -1;
+         /* UUID v4 */
+         id[6] = (id[6] & 0xf) | 0x40;
+         /* RFC4122 */
+         id[8] = (id[8] & 0x3f) | 0x80;
+         if (uuid)
+                 memcpy(uuid, id, sizeof(uuid_t));
+         return 0;
+ }
+ /*
+  * uuid_str() - Convert UUID to string
+  *
+  * @uuid = UUID
+  * @str = String
+  * @len = Length
+  *
+  * return: -1 error or processed bytes
+  */
+ int
+ uuid_str(uuid_t uuid, char *str, int len)
+ {
+         if (!uuid || !str || len < 37)
+                 return -1;
+         return snprintf(str, len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+                         uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], uuid[6], uuid[7],
+                         uuid[8], uuid[9], uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]);
+ }

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Removed from v.1.1
changed lines
	Added in v.1.1.2.1